@PROCEEDINGS {JUO:1979c, title = {Interaction and balance of macro-and micro-nutrients in highly weathered soils in the humid tropics}, author = {Juo, A. S. R. }, booktitle = {FAO/India/Norway, Seminar on Micronutrients in Agriculture, New Delhi, September 17-21, 1979}, year = {1979}, month = {September}, }